I am using Hibernate version 2.1

I have a one-to-many relationship configured. When I run my code, it gives me the following error:

12:13:11,148 INFO Configuration:595 - processing one-to-many association mappin
gs
Exception in thread "main" net.sf.hibernate.MappingException: Association refere
nces unmapped class: com.pepsi.compensation.PlanComponent
at net.sf.hibernate.cfg.Binder.bindCollectionSecondPass(Binder.java:1148
)
at net.sf.hibernate.cfg.Binder$CollectionSecondPass.secondPass(Binder.ja
va:1352)
at net.sf.hibernate.cfg.Binder$SecondPass.doSecondPass(Binder.java:1328)

at net.sf.hibernate.cfg.Configuration.secondPassCompile(Configuration.ja
va:600)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.
java:743)
at com.pepsi.compensation.PlanAccessor.configure(PlanAccessor.java:14)
at com.pepsi.compensation.PlanAccessor.main(PlanAccessor.java:103)


Can anyone help me?

Can you post your mapping file(s)?

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="com.pepsi.compensation.Plan" table="PLAN">
<id name="id" type="string" unsaved-value="null">
<column name="ID" sql-type="varchar2(255)" not-null="true"/>
<generator class="uuid.hex"/>
</id>
<property name="name">
<column name="NAME" sql-type="varchar2(50)" not-null="true"/>
</property>
<property name="desc">
<column name="DESCRIPTION" sql-type="varchar2(255)" not-null="true"/>
</property>
<set name="componentSet" table="PLAN_COMPONENT" inverse="true" cascade="all">
<key column="PLAN_ID"/>
<one-to-many class="com.pepsi.compensation.PlanComponent"/>
</set>
</class>
</hibernate-mapping>




<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="com.pepsi.compensation.Component" table="COMPONENT">
<id name="id" type="string" unsaved-value="null">
<column name="ID" sql-type="varchar2(255)" not-null="true"/>
<generator class="uuid.hex"/>
</id>
<property name="name">
<column name="NAME" sql-type="varchar2(50)" not-null="true"/>
</property>
<property name="desc">
<column name="DESCRIPTION" sql-type="varchar2(255)" not-null="true"/>
</property>
</class>
</hibernate-mapping>





<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="com.pepsi.compensation.PlanComponent" table="PLAN_COMPONENT">
<id name="id" type="string" unsaved-value="null">
<column name="ID" sql-type="varchar2(255)" not-null="true"/>
<generator class="uuid.hex"/>
</id>
<property name="planID" insert="false" update="false">
<column name="PLAN_ID" sql-type="varchar2(255)" not-null="true"/>
</property>
<property name="componentID" insert="false" update="false">
<column name="COMPONENT_ID" sql-type="varchar2(255)" not-null="true"/>
</property>
<many-to-one name="plan" class="com.pepsi.compensation.Plan" column="PLAN_ID"/>
<many-to-one name="component" class="com.pepsi.compensation.Component"
cascade="save-update" column="COMPONENT_ID"/>
</class>
</hibernate-mapping>

Have you made sure that the class com.pepsi.compensation.PlanComponent is known to the hibernate configuration (i.e. a mapping element for this class appears in hibernate.cfg.xml, or another similar registration mechanism is used)?

Other than a type-o, the problem described above is the most common cause of this type of error that I've seen.

Hope this helps.

I dont have hibernate.cfg.xml file. I have hibernate.properties file, but this does not have any class names. Do I need to give one? This is how my file looks:



hibernate.connection.username=flemp_ssa
hibernate.connection.password=b0nusssa
hibernate.connection.url=jdbc:oracle:thin:@pbsxdr00047:1521:shr3d
hibernate.connection.driver_class=oracle.jdbc.driver.OracleDriver
hibernate.dialect=net.sf.hibernate.dialect.OracleDialect

I'm not sure how to specify mappings in the properties file, or whether that's even possible. When you do use a properties file to do some initialization, you can let hibernate know about your mapped classes like this, provided that your mapping files are on the classpath in the same location as your class files:

Configuration cfg = new Configuration();
cfg.addClass(com.pepsi.compensation.PlanComponent.class);
.
.
.
cfg.configure();

If you've already done this, then I can't really say what's causing your problem.

That is right, I did not add PlanComponent class to my configuration. I did that and it worked...

Thanks All